Oct 11, 2023

Project Mu Upgrade Piston Kit for R32 Calipers

By Sean Morris October 11, 2023 bnr32, brakes, Featured

RHD Japan posted this new upgrade piston kit from Project Mu for the Nissan Skyline front and rear caliper. The caliper used on the R32 GT-R was used on a ton of different cars. On the R32 GT-R, it used a unique sized rotor (296x32), but the pads, and internal parts of the caliper are the same as many other cars, including the 300ZX, and Nissan Silvia S14, and S15.

Front Upgrade Piston Kit -

Rear Upgrade Piston Kit -

For the regular R32 Nissan Skyline GT-R the front shape is a FMSI D460, D647, D1182 HB178 with a .564 thickness. At the rear the shape is a FMSI D461 HB179 with a .630 thickness

Front R32 brake pad(non-Brembo) FMSI D460, D647, D1182 HB178

Rear R32 brake pad(non-Brembo) FMSI D461 HB179

These aren't inexpensive, and many people may chose to go another route, but if you want to keep the car looking stock, and are rebuilding the calipers anyway, I think its a good choice to put better than stock parts back in.

Brake Caliper Rebuild - NICO has a good guide on rebuilding the calipers. They aren't leaking, but they are old, and its always a good idea to go though the calipers about once a season if you keep the temps down.
Rear Brake Caliper part numbers - R32 GT-R

44001-43P00 - RH Alternate - 44001-05U00
44011-43P00 - LH Alternate - 44011-05U00

These items are designed to replace the standard pistons within the brake caliper. With improved materials and Kashima finishing lighter weight and smoother operation achieved providing improved brake feeling with enhanced durability and anti-corrosion properties for secure long lasting application. Solely developed for the sports orientated factory 4Pot front and 2Pot rear brake calipers equipped on select Nissan and Subaru applications. Also a highly sought after choice and upgrade for other poplar vehicles from the 80's to early 2000's. Get this and all your JDM at RHDJapan!!

Brand: Project Mu
Product: Brake Caliper Upgrade Piston Kit - Nissan / Subaru Front 4-Pot
Part Number: UGP-F236

SPECIFICATIONS:
Application: Front
Material: Aluminum
Finish: Kashima Coat
JAN Code: 4514149702115

PRODUCT NOTES:
Seals/boots, etc not included
Approximately 1/3rd weight of factory steel pistons

COMPATIBILITY NOTES:
Not compatible with BREMBO Type Calipers
Calipers that use Pad Shape F236

Compatibility is from maker for JDM cars only. We don't guarantee fitment. Always do your own research before purchase. After-sale support does not include installation support.

Nissan Fairlady Z CZ32 VG30DETT (07/1989-07/1993)
Nissan Fairlady Z CZ32 VG30DETT (08/1993-09/1994)
Nissan Fairlady Z CZ32 VG30DETT (10/1994-12/1996)
Nissan Fairlady Z CZ32 VG30DETT (01/1997-07/2000)
Nissan Fairlady Z GCZ32 VG30DETT (07/1989-07/1993)
Nissan Fairlady Z GCZ32 VG30DETT (08/1993-09/1994)
Nissan Fairlady Z GCZ32 VG30DETT (10/1994-12/1996)
Nissan Fairlady Z GCZ32 VG30DETT (01/1997-07/2000)
Nissan Fairlady Z GZ32 VG30DE (07/1989-07/1993)
Nissan Fairlady Z GZ32 VG30DE (08/1993-09/1994)
Nissan Fairlady Z GZ32 VG30DE (10/1994-12/1996)
Nissan Fairlady Z GZ32 VG30DE (01/1997-07/2000)
Nissan Fairlady Z Z32 VG30DE (07/1989-07/1993)
Nissan Fairlady Z Z32 VG30DE (08/1993-09/1994)
Nissan Fairlady Z Z32 VG30DE (10/1994-12/1996)
Nissan Fairlady Z Z32 VG30DE (01/1997-07/2000)
Nissan Silvia S14 SR20DE (10/1993-06/1996)
Nissan Silvia S14 SR20DE (06/1996-12/1998)
Nissan Silvia S14 SR20DET (10/1993-06/1996)
Nissan Silvia S14 SR20DET (06/1996-12/1998)
Nissan Silvia S15 SR20DE (01/1999-08/2002)
Nissan Silvia S15 SR20DET (01/1999-08/2002)
Nissan Skyline ECR33 RB25DET (08/1993-01/1995)
Nissan Skyline ECR33 RB25DET (01/1995-01/1996)
Nissan Skyline ECR33 RB25DET (01/1996-05/1998)
Nissan Skyline ER34 RB25DE (05/1998-08/2000)
Nissan Skyline ER34 RB25DE (08/2000-06/2001)
Nissan Skyline ER34 RB25DET (05/1998-08/2000)
Nissan Skyline ER34 RB25DET (08/2000-06/2001)
Nissan Skyline HCR32 RB20DET (05/1989-08/1991)
Nissan Skyline HCR32 RB20DET (08/1991-08/1993)
Nissan Skyline GT-R BNR32 RB26DETT (08/1989-08/1991)
Nissan Skyline GT-R BNR32 RB26DETT (08/1991-02/1993)
Nissan Skyline GT-R BNR32 RB26DETT (02/1993-12/1994)
Subaru Forester SF5 Applied A EJ20T (02/1997-08/1998)
Subaru Forester SF5 Applied B EJ20T (09/1998-12/1999)
Subaru Forester SF5 Applied C EJ20T (01/2000-12/2000)
Subaru Forester SF5 Applied D EJ20T (01/2001-01/2002)
Subaru Impreza GC8 Applied A EJ20 (11/1992-09/1993)
Subaru Impreza GC8 Applied B EJ20 (10/1993-08/1994)
Subaru Impreza GC8 Applied C EJ20 (09/1994-09/1996)
Subaru Impreza GC8 Applied D EJ20 (09/1996-09/1997)
Subaru Impreza GC8 Applied E EJ20 (09/1997-09/1998)
Subaru Impreza GC8 Applied F EJ20 (09/1998-09/1999)
Subaru Impreza GC8 Applied G EJ20 (09/1999-09/2000)
Subaru Impreza Sports Wagon GF8 Applied A EJ20G (11/1992-09/1993)
Subaru Impreza Sports Wagon GF8 Applied B EJ20G (10/1993-08/1994)
Subaru Impreza Sports Wagon GF8 Applied C EJ20G (09/1994-09/1996)
Subaru Impreza Sports Wagon GF8 Applied D EJ20K (09/1996-09/1997)
Subaru Impreza Sports Wagon GF8 Applied E EJ20K (09/1997-09/1998)
Subaru Impreza Sports Wagon GF8 Applied F EJ207 (09/1998-09/1999)
Subaru Impreza Sports Wagon GF8 Applied G EJ207 (09/1999-09/2000)
Subaru Impreza Sports Wagon WRX GF8 Applied A EJ20G (11/1992-09/1993)
Subaru Impreza Sports Wagon WRX GF8 Applied B EJ20G (10/1993-08/1994)
Subaru Impreza Sports Wagon WRX GF8 Applied C EJ20G (09/1994-09/1996)
Subaru Impreza Sports Wagon WRX GF8 Applied D EJ20K (09/1996-09/1997)
Subaru Impreza Sports Wagon WRX GF8 Applied E EJ20K (09/1997-09/1998)
Subaru Impreza Sports Wagon WRX GF8 Applied F EJ207 (09/1998-09/1999)
Subaru Impreza Sports Wagon WRX GF8 Applied G EJ207 (09/1999-09/2000)
Subaru Impreza Sports Wagon WRX STI GF8 Ver. I EJ20G (11/1992-09/1993)
Subaru Impreza Sports Wagon WRX STI GF8 Ver. I EJ20G (10/1993-08/1994)
Subaru Impreza Sports Wagon WRX STI GF8 Ver. II EJ20G (09/1994-09/1996)
Subaru Impreza Sports Wagon WRX STI GF8 Ver. III EJ20K (09/1996-09/1997)
Subaru Impreza Sports Wagon WRX STI GF8 Ver. IV EJ20K (09/1997-09/1998)
Subaru Impreza Sports Wagon WRX STI GF8 Ver. V EJ207 (09/1998-09/1999)
Subaru Impreza Sports Wagon WRX STI GF8 Ver. VI EJ207 (09/1999-09/2000)
Subaru Impreza WRX GC8 Applied A EJ20G (11/1992-09/1993)
Subaru Impreza WRX GC8 Applied B EJ20G (10/1993-08/1994)
Subaru Impreza WRX GC8 Applied C EJ20G (09/1994-09/1996)
Subaru Impreza WRX GC8 Applied D EJ20K (09/1996-09/1997)
Subaru Impreza WRX GC8 Applied E EJ20K (09/1997-09/1998)
Subaru Impreza WRX GC8 Applied F EJ207 (09/1998-09/1999)
Subaru Impreza WRX GC8 Applied G EJ207 (09/1999-09/2000)
Subaru Impreza WRX GDA Applied A EJ207 (08/2000-08/2001)
Subaru Impreza WRX GDA Applied B EJ207 (09/2001-10/2002)
Subaru Impreza WRX GDA Applied C EJ207 (10/2002-09/2003)
Subaru Impreza WRX GDA Applied D EJ207 (09/2003-06/2004)
Subaru Impreza WRX GDA Applied E EJ207 (06/2004-06/2005)
Subaru Impreza WRX GDA Applied F EJ207 (06/2005-06/2006)
Subaru Impreza WRX GDA Applied G EJ207 (06/2006-06/2007)
Subaru Impreza WRX STI GC8 Version I EJ20G (11/1992-09/1993)
Subaru Impreza WRX STI GC8 Version I EJ20G (10/1993-08/1994)
Subaru Impreza WRX STI GC8 Version II EJ20G (09/1994-09/1996)
Subaru Impreza WRX STI GC8 Version III EJ20K (09/1996-09/1997)
Subaru Impreza WRX STI GC8 Version IV EJ20K (09/1997-09/1998)
Subaru Impreza WRX STI GC8 Version V EJ207 (09/1998-09/1999)
Subaru Impreza WRX STI GC8 Version VI EJ207 (09/1999-09/2000)
Subaru Impreza WRX STI GDB Applied A EJ207 (08/2000-08/2001)
Subaru Impreza WRX STI GDB Applied B EJ207 (09/2001-10/2002)
Subaru Impreza WRX STI GDB Applied C EJ207 (10/2002-09/2003)
Subaru Impreza WRX STI GDB Applied D EJ207 (09/2003-06/2004)
Subaru Impreza WRX STI GDB Applied E EJ207 (06/2004-06/2005)
Subaru Impreza WRX STI GDB Applied F EJ207 (06/2005-06/2006)
Subaru Impreza WRX STI GDB Applied G EJ207 (06/2006-06/2007)
Subaru Legacy B4 BE5 Applied A EJ20 (06/1998-04/1999)
Subaru Legacy B4 BE5 Applied B EJ20 (05/1999-04/2000)
Subaru Legacy B4 BE5 Applied C EJ20 (05/2000-04/2001)
Subaru Legacy B4 BE5 Applied D EJ20 (05/2001-04/2003)
Subaru Legacy Touring Wagon BH5 Applied A EJ20 (06/1998-04/1999)
Subaru Legacy Touring Wagon BH5 Applied B EJ20 (05/1999-04/2000)
Subaru Legacy Touring Wagon BH5 Applied C EJ20 (05/2000-04/2001)
Subaru Legacy Touring Wagon BH5 Applied D EJ20 (05/2001-04/2002)
Subaru Legacy Touring Wagon BH5 Applied D EJ20 (05/2002-04/2003)

Brake rotors for Nissan Skyline GT-R R32 Sumitomo calipers - Non Brembo.
Two piece OEM R32 GT-R size. 296 x 32 15.32 lbs
Front -296 mm x 32 mm
40206-05U02 Right Front OEM Cross Drilled
40206-05U10 Right Front OEM Plain
40206-05U03 Left Front OEM Cross Drilled
40206-05U11 Left Front OEM Plain
Rear- 297 mm x 18 mm
43206-05U13 Rear OEM Cross Drilled
The OEM rotors are cross drilled. Eventually in the GT-R racing range they went to a solid rotor, because cross drilled rotors crack. For racing use, usually a different kind of surface treatment is popular(Plain, slotted, J-Hook). Cross drilling looks good, and works well enough on the street. I like a two piece rotor as they weigh less than a solid disk. You can save several pounds per corner by going to a aluminum hatted rotor.
DBA has their 5000 series of rotors but not in the stock 296 mm size, just the 4000 series rotors (Front DBA 4926 296MM 4000 Series Heavy Duty.)(Rear DBA 908) Have to see if I can come up with anything, or do something like a bracket to put a larger rotor on the car. Larger rotors mean larger wheels, and I think I am sticking with the 16's. (I lied, I'm on R34 18" now) Brake Weights - R32 GT-R
EBC Brake rotors ~$250 to $350 for a set - Front RK1226 ~$85-120 for a set Rear RK699

Buy USA Legal R32, R33, and R34 Skylines at Toprank Importers!
Index and Start Page
Nissan Skyline Parts and Toys